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@ -1,7 +1,7 @@ |
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/*
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* iwinfo - Wireless Information Library - NL80211 Backend |
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* |
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* Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org> |
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* Copyright (C) 2010-2013 Jo-Philipp Wich <xm@subsignal.org> |
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* |
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* The iwinfo library is free software: you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License version 2 |
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@ -448,12 +448,17 @@ static char * nl80211_ifname2phy(const char *ifname) |
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static char * nl80211_hostapd_info(const char *ifname) |
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{ |
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int mode; |
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char *phy; |
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char path[32] = { 0 }; |
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static char buf[4096] = { 0 }; |
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FILE *conf; |
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if ((phy = nl80211_ifname2phy(ifname)) != NULL) |
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if (nl80211_get_mode(ifname, &mode)) |
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return NULL; |
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if ((mode == IWINFO_OPMODE_MASTER || mode == IWINFO_OPMODE_AP_VLAN) && |
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(phy = nl80211_ifname2phy(ifname)) != NULL) |
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{ |
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snprintf(path, sizeof(path), "/var/run/hostapd-%s.conf", phy); |
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@ -716,50 +721,180 @@ void nl80211_close(void) |
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} |
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} |
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static int nl80211_get_mode_cb(struct nl_msg *msg, void *arg) |
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{ |
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int *mode = arg; |
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struct nlattr **tb = nl80211_parse(msg); |
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const int ifmodes[NL80211_IFTYPE_MAX + 1] = { |
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IWINFO_OPMODE_UNKNOWN, /* unspecified */ |
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IWINFO_OPMODE_ADHOC, /* IBSS */ |
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IWINFO_OPMODE_CLIENT, /* managed */ |
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IWINFO_OPMODE_MASTER, /* AP */ |
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IWINFO_OPMODE_AP_VLAN, /* AP/VLAN */ |
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IWINFO_OPMODE_WDS, /* WDS */ |
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IWINFO_OPMODE_MONITOR, /* monitor */ |
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IWINFO_OPMODE_MESHPOINT, /* mesh point */ |
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IWINFO_OPMODE_P2P_CLIENT, /* P2P-client */ |
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IWINFO_OPMODE_P2P_GO, /* P2P-GO */ |
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}; |
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if (tb[NL80211_ATTR_IFTYPE]) |
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*mode = ifmodes[nla_get_u32(tb[NL80211_ATTR_IFTYPE])]; |
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return NL_SKIP; |
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} |
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int nl80211_get_mode(const char *ifname, int *buf) |
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{ |
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return wext_get_mode(ifname, buf); |
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char *res; |
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struct nl80211_msg_conveyor *req; |
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res = nl80211_phy2ifname(ifname); |
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req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_INTERFACE, 0); |
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*buf = IWINFO_OPMODE_UNKNOWN; |
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if (req) |
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{ |
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nl80211_send(req, nl80211_get_mode_cb, buf); |
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nl80211_free(req); |
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} |
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return (*buf == IWINFO_OPMODE_UNKNOWN) ? -1 : 0; |
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} |
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struct nl80211_ssid_bssid { |
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unsigned char *ssid; |
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unsigned char bssid[7]; |
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}; |
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static int nl80211_get_ssid_bssid_cb(struct nl_msg *msg, void *arg) |
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{ |
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int ielen; |
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unsigned char *ie; |
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struct nl80211_ssid_bssid *sb = arg; |
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struct nlattr **tb = nl80211_parse(msg); |
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struct nlattr *bss[NL80211_BSS_MAX + 1]; |
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static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { |
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[NL80211_BSS_INFORMATION_ELEMENTS] = { }, |
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[NL80211_BSS_STATUS] = { .type = NLA_U32 }, |
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}; |
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if (!tb[NL80211_ATTR_BSS] || |
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nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS], |
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bss_policy) || |
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!bss[NL80211_BSS_BSSID] || |
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!bss[NL80211_BSS_STATUS] || |
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!bss[NL80211_BSS_INFORMATION_ELEMENTS]) |
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{ |
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return NL_SKIP; |
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} |
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switch (nla_get_u32(bss[NL80211_BSS_STATUS])) |
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{ |
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case NL80211_BSS_STATUS_ASSOCIATED: |
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case NL80211_BSS_STATUS_AUTHENTICATED: |
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case NL80211_BSS_STATUS_IBSS_JOINED: |
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if (sb->ssid) |
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{ |
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ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]); |
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ielen = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]); |
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while (ielen >= 2 && ielen >= ie[1]) |
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{ |
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if (ie[0] == 0) |
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{ |
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memcpy(sb->ssid, ie + 2, min(ie[1], IWINFO_ESSID_MAX_SIZE)); |
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return NL_SKIP; |
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} |
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ielen -= ie[1] + 2; |
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ie += ie[1] + 2; |
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} |
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} |
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else |
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{ |
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sb->bssid[0] = 1; |
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memcpy(sb->bssid + 1, nla_data(bss[NL80211_BSS_BSSID]), 6); |
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return NL_SKIP; |
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} |
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default: |
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return NL_SKIP; |
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} |
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} |
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int nl80211_get_ssid(const char *ifname, char *buf) |
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{ |
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char *ssid; |
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char *res; |
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struct nl80211_msg_conveyor *req; |
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struct nl80211_ssid_bssid sb; |
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/* try to find ssid from scan dump results */ |
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res = nl80211_phy2ifname(ifname); |
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req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP); |
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if (!wext_get_ssid(ifname, buf)) |
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sb.ssid = buf; |
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*buf = 0; |
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if (req) |
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{ |
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return 0; |
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nl80211_send(req, nl80211_get_ssid_bssid_cb, &sb); |
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nl80211_free(req); |
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} |
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else if ((ssid = nl80211_hostapd_info(ifname)) && |
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(ssid = nl80211_getval(ifname, ssid, "ssid"))) |
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/* failed, try to find from hostapd info */ |
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if ((*buf == 0) && |
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(res = nl80211_hostapd_info(ifname)) && |
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(res = nl80211_getval(ifname, res, "ssid"))) |
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{ |
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memcpy(buf, ssid, strlen(ssid)); |
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return 0; |
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memcpy(buf, res, strlen(res)); |
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} |
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return -1; |
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return (*buf == 0) ? -1 : 0; |
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} |
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int nl80211_get_bssid(const char *ifname, char *buf) |
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{ |
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char *bssid; |
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unsigned char mac[6]; |
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char *res; |
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struct nl80211_msg_conveyor *req; |
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struct nl80211_ssid_bssid sb; |
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/* try to find bssid from scan dump results */ |
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res = nl80211_phy2ifname(ifname); |
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req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP); |
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if (!wext_get_bssid(ifname, buf)) |
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sb.ssid = NULL; |
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sb.bssid[0] = 0; |
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if (req) |
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{ |
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return 0; |
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nl80211_send(req, nl80211_get_ssid_bssid_cb, &sb); |
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nl80211_free(req); |
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} |
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else if ((bssid = nl80211_hostapd_info(ifname)) && |
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(bssid = nl80211_getval(ifname, bssid, "bssid"))) |
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/* failed, try to find mac from hostapd info */ |
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if ((sb.bssid[0] == 0) && |
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(res = nl80211_hostapd_info(ifname)) && |
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(res = nl80211_getval(ifname, res, "bssid"))) |
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{ |
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mac[0] = strtol(&bssid[0], NULL, 16); |
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mac[1] = strtol(&bssid[3], NULL, 16); |
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mac[2] = strtol(&bssid[6], NULL, 16); |
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mac[3] = strtol(&bssid[9], NULL, 16); |
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mac[4] = strtol(&bssid[12], NULL, 16); |
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mac[5] = strtol(&bssid[15], NULL, 16); |
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sb.bssid[0] = 1; |
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sb.bssid[1] = strtol(&res[0], NULL, 16); |
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sb.bssid[2] = strtol(&res[3], NULL, 16); |
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sb.bssid[3] = strtol(&res[6], NULL, 16); |
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sb.bssid[4] = strtol(&res[9], NULL, 16); |
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sb.bssid[5] = strtol(&res[12], NULL, 16); |
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sb.bssid[6] = strtol(&res[15], NULL, 16); |
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} |
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if (sb.bssid[0]) |
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{ |
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sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X", |
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mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); |
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sb.bssid[1], sb.bssid[2], sb.bssid[3], |
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sb.bssid[4], sb.bssid[5], sb.bssid[6]); |
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return 0; |
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} |
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@ -768,7 +903,7 @@ int nl80211_get_bssid(const char *ifname, char *buf) |
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} |
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static int nl80211_get_frequency_cb(struct nl_msg *msg, void *arg) |
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static int nl80211_get_frequency_scan_cb(struct nl_msg *msg, void *arg) |
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{ |
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int *freq = arg; |
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struct nlattr **attr = nl80211_parse(msg); |
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@ -789,14 +924,36 @@ static int nl80211_get_frequency_cb(struct nl_msg *msg, void *arg) |
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return NL_SKIP; |
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} |
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static int nl80211_get_frequency_info_cb(struct nl_msg *msg, void *arg) |
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{ |
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int *freq = arg; |
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struct nlattr **tb = nl80211_parse(msg); |
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if (tb[NL80211_ATTR_WIPHY_FREQ]) |
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*freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]); |
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return NL_SKIP; |
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} |
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int nl80211_get_frequency(const char *ifname, int *buf) |
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{ |
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char *res, *channel; |
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struct nl80211_msg_conveyor *req; |
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/* try to find frequency from interface info */ |
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res = nl80211_phy2ifname(ifname); |
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req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_INTERFACE, 0); |
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*buf = 0; |
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if ((res = nl80211_hostapd_info(ifname)) && |
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if (req) |
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{ |
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nl80211_send(req, nl80211_get_frequency_info_cb, buf); |
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nl80211_free(req); |
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} |
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/* failed, try to find frequency from hostapd info */ |
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if ((*buf == 0) && |
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(res = nl80211_hostapd_info(ifname)) && |
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(channel = nl80211_getval(NULL, res, "channel"))) |
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{ |
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*buf = nl80211_channel2freq(atoi(channel), |
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@ -804,13 +961,18 @@ int nl80211_get_frequency(const char *ifname, int *buf) |
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} |
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else |
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{ |
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res = nl80211_phy2ifname(ifname); |
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req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP); |
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if (req) |
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/* failed, try to find frequency from scan results */ |
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if (*buf == 0) |
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{ |
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nl80211_send(req, nl80211_get_frequency_cb, buf); |
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nl80211_free(req); |
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res = nl80211_phy2ifname(ifname); |
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req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_SCAN, |
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NLM_F_DUMP); |
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if (req) |
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{ |
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nl80211_send(req, nl80211_get_frequency_scan_cb, buf); |
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nl80211_free(req); |
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} |
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} |
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} |
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@ -831,6 +993,16 @@ int nl80211_get_channel(const char *ifname, int *buf) |
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int nl80211_get_txpower(const char *ifname, int *buf) |
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{ |
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char *res; |
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char path[PATH_MAX]; |
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res = nl80211_ifname2phy(ifname); |
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snprintf(path, sizeof(path), "/sys/kernel/debug/ieee80211/%s/power", |
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res ? res : ifname); |
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if ((*buf = nl80211_readint(path)) > -1) |
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return 0; |
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return wext_get_txpower(ifname, buf); |
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} |
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@ -931,9 +1103,6 @@ int nl80211_get_bitrate(const char *ifname, int *buf) |
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{ |
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struct nl80211_rssi_rate rr; |
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if (!wext_get_bitrate(ifname, buf)) |
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return 0; |
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nl80211_fill_signal(ifname, &rr); |
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if (rr.rate) |
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@ -949,9 +1118,6 @@ int nl80211_get_signal(const char *ifname, int *buf) |
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{ |
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struct nl80211_rssi_rate rr; |
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if (!wext_get_signal(ifname, buf)) |
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return 0; |
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nl80211_fill_signal(ifname, &rr); |
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if (rr.rssi) |
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@ -1018,43 +1184,39 @@ int nl80211_get_quality(const char *ifname, int *buf) |
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{ |
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int signal; |
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if (wext_get_quality(ifname, buf)) |
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if (!nl80211_get_signal(ifname, &signal)) |
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{ |
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*buf = 0; |
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if (!nl80211_get_signal(ifname, &signal)) |
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/* A positive signal level is usually just a quality
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* value, pass through as-is */ |
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if (signal >= 0) |
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{ |
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/* A positive signal level is usually just a quality
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* value, pass through as-is */ |
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if (signal >= 0) |
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{ |
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*buf = signal; |
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} |
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*buf = signal; |
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} |
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/* The cfg80211 wext compat layer assumes a signal range
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* of -110 dBm to -40 dBm, the quality value is derived |
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* by adding 110 to the signal level */ |
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else |
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{ |
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if (signal < -110) |
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signal = -110; |
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else if (signal > -40) |
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signal = -40; |
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/* The cfg80211 wext compat layer assumes a signal range
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* of -110 dBm to -40 dBm, the quality value is derived |
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* by adding 110 to the signal level */ |
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else |
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{ |
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if (signal < -110) |
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signal = -110; |
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else if (signal > -40) |
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signal = -40; |
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*buf = (signal + 110); |
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} |
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*buf = (signal + 110); |
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} |
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return 0; |
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} |
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return 0; |
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return -1; |
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} |
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int nl80211_get_quality_max(const char *ifname, int *buf) |
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{ |
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if (wext_get_quality_max(ifname, buf)) |
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/* The cfg80211 wext compat layer assumes a maximum
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* quality of 70 */ |
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*buf = 70; |
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/* The cfg80211 wext compat layer assumes a maximum
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* quality of 70 */ |
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*buf = 70; |
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return 0; |
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} |
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